I've heard that the Fermangh challenge will be along the same lines as the controversy in
Winchester in 1997 - i.e. some ballots not having the official stamp/mark and when the Court counts them, if they would have changed the result (not impossible when the majority is 4!) then it could be thrown out.
The OE&S challenge is unlikely to succeed - the "wooing Muslim voters" can be cast as simply stating an opinion and cannot meet the legal tests for falsity required under the Representation of the People Act 1983.
The Rose and The Examiner in which most of the offending articles can be found are not endorsed by the candidate or his agent, therefore probably can't be considered by the Court.